JottoSW1 Posted July 10 Share Posted July 10 So grabbed one of these with free postage (sic) v v v cheap and its on its way. 1) series 6 so no bipolar beary thingy ? 2) old style TE computer transistors ? I'm guessing it's as reliable as a club hammer but more sledgehammer weight? Calling at @Chimike who knows lots. At some point I might look out for a used rack system for it. How much additional space would any of you folks recommend for any used rax mount preamps that I might develop gas for. No alembics etc as I'm skint 1 Quote Link to comment Share on other sites More sharing options...
JottoSW1 Posted July 10 Author Share Posted July 10 Alternatively I could make one I guess. Quote Link to comment Share on other sites More sharing options...
VTypeV4 Posted July 10 Share Posted July 10 Old but gold there, man - they're tough old things and will be a 'good' 150w per ch. Bi Polar Bear power amps were only fitted to SM, possibly some early SMC, mid production SMX and the earlier V-Type hybrid models. None of the pro-audio or stand alone products used it. If I remember correctly, the RA300 and the later PPA-300 don't even have a fan so given a little air flow, I would expect they'll outlast us all. 😃 1 Quote Link to comment Share on other sites More sharing options...
JottoSW1 Posted July 11 Author Share Posted July 11 Correct, whopping heat sinks on photo. I think I might get a second hand rack case for carrying it primarily, ideally with a bit of room for adequate air flow. Only more than purely cosmetic issue is a slightly bent rack ear. As and when I gets me some preamps they can live separately or are pedal jobbies. Any spare parts required may be avilable ex another trace expert of our mutual acquaintance ie mosfets. I have an Ah500x ex stewblack of this parish already so two channel goodness already available. Another beast that I need to look after 1 Quote Link to comment Share on other sites More sharing options...
bremen Posted July 11 Share Posted July 11 https://gb.profusion.uk/uk/audio/transist/lateral-mosfets 1 Quote Link to comment Share on other sites More sharing options...
JottoSW1 Posted July 13 Author Share Posted July 13 (edited) Here we are. Now two cheap preamps, a Rickenbacker Y cable and my friend's Rickenbacker. Bit tatty but not as heavy as I expected. Cheers for info @VTypeV4 and @bremen Edited July 13 by JottoSW1 Thanks to Bremen 4 Quote Link to comment Share on other sites More sharing options...
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